So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Wang, Hai-jun; Li, Cheng; Wang, Lai-lai researched the compound: (R)-2,2′,6,6′-Tetramethoxy-4,4′-bis(diphenylphosphino)-3,3′-bipyridine( cas:221012-82-4 ).COA of Formula: C38H34N2O4P2.They published the article 《Stereoselective alternating copolymerization of propene and carbon monoxide catalyzed by Pd(II) -chiral ligands treated with BF3 · Et2O》 about this compound( cas:221012-82-4 ) in Fenzi Cuihua. Keywords: stereoselective alternating polymerization propylene carbon monoxide; palladium phosphine complex boron compound catalyst stereoselective alternating polymerization. We’ll tell you more about this compound (cas:221012-82-4).
The use of BF3·Et2O as a co-catalyst in the alternating copolymerization of propene and carbon monoxide catalyzed by [L2]Pd (OAC)2 (L2 = chiral diphosphine ligand) in CH2Cl2/CH3OH was reported. High yields of chiral polyketone were obtained. 13C NMR, 1H NMR and molar optical rotation confirmed that the copolymers have an alternating structure and high streroregularity. The IR spectra of the copolymers showed that both spiroketal and pure ketone structures were present at the same time. Low mol. weight and wide polydispersity of the chiral polyketones were achieved.
This literature about this compound(221012-82-4)COA of Formula: C38H34N2O4P2has given us a lot of inspiration, and I hope that the research on this compound((R)-2,2′,6,6′-Tetramethoxy-4,4′-bis(diphenylphosphino)-3,3′-bipyridine) can be further advanced. Maybe we can get more compounds in a similar way.
Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider